Gouache Painting: The Complete Guide for Artists

Gouache (pronounced 'gwash') is a versatile, opaque watercolour beloved by illustrators, designers, and fine artists. Its matte finish and reworkable nature make it perfect for both studies and finished work.

What Makes Gouache Special?

• Opacity: Unlike watercolours, gouache covers completely
• Matte finish: Perfect for reproduction and scanning
• Reworkable: Can be reactivated with water even when dry
• Quick drying: Faster than oils, similar to acrylics
• Portable: Water-based, easy cleanup

Gouache vs Watercolour

Key differences:

• Gouache is opaque; watercolour is transparent
• Gouache can paint light over dark
• Watercolour relies on paper white for highlights
• Both can be used together effectively

Gouache vs Acrylic Gouache

Traditional gouache rewets; acrylic gouache does not:

• Traditional: Reworkable, can lift and adjust
• Acrylic: Permanent when dry, better for layering
• Choose based on your working style

Essential Techniques

Flat Washes

Gouache excels at smooth, even coverage:

1. Mix enough paint for entire area
2. Use consistent water ratio
3. Apply in one direction
4. Work quickly before edges dry

Layering

• Let each layer dry completely
• Use less water in upper layers
• Work quickly to avoid lifting lower layers

Dry Brush

Create texture with minimal water:

• Load brush with thick paint
• Remove excess on paper towel
• Drag across surface for texture

Colour Mixing

Gouache behaves differently than other paints:

• Colours dry lighter than wet
• Test swatches before applying
• Add white to increase opacity
• Mix thoroughly to avoid streaks

Best Papers for Gouache

• Hot press watercolour paper (smooth)
• Mixed media paper
• Illustration board
• Toned papers for dramatic effects

Recommended Brands

Check our gouache paint guide for detailed reviews:

• Winsor & Newton Designers Gouache
• Holbein Artists' Gouache
• Schmincke Horadam Gouache
• Himi Gouache (budget-friendly)

Explore our complete painting guides for more recommendations.